Power management

DC/DC buck converters

DC/DC voltage conversion that balances simplicity and flexibility

Because buck converters feature a controller with one or more integrated FETs and an external inductor, they offer a balance of flexibility and ease of use. Both non-synchronous converters (integrated high-side FET and external diode) and synchronous converters (integrated high-side and low-side FETs) simplify the design process by reducing external component count. At the same time, an external inductor allows you the flexibility to optimize your power supply for efficiency, size, or cost. No matter what your application is, we have a DC/DC buck converter and design tools to help you address your power supply design challenges.

Search by nominal input voltage


DC/DC buck converter ICs intended to take input voltages from various battery chemistries, typically for portable personal electronics applications.

< 6V

3.3V and 5V are common intermediate buses and are also popular input rails for personal electronics and other low-power systems.

12 V

DC/DC step-down converters for common 12V input applications like communications infrastructure, enterprise computing, or 12V automotive systems.

24 V

DC/DC buck converters targeting a nominal 24V input, with maximum operating input voltages as high as 100V to protect against voltage transients. Common application areas needing 24V are broad industrial and 24V automotive.

48 V

DC/DC step-down converters for nominal 48V input voltage systems like telecommunications infrastructure and the emerging HEV/EV automotive space.

Browse by key design characteristics

Wide input voltage

Wide VIN devices feature a maximum input voltage of greater than 30V and are typically deployed in nominal 12V, 24V, and 48V systems where high input voltage transients are common.

Low quiescent current

Switching regulators with ultra-low standby quiescent current increase light-load efficiency and extend battery life in portable and battery-operated applications.

Ease of use

SIMPLE SWITCHER® power converters are designed for ease of use from the ground up. Common features include high integration, low component count, and packaging with visual inspection capability.

High power density

Highlighted by the SWIFT™ converter and power module portfolios, these highly-integrated regulators feature high output current capability in compact, thermally-enhanced packaging

FPGA and processor attach

Your digital core craves an efficient power supply. Find the latest and greatest switching converters, controllers, and modules to power every rail of your FPGA or processor.

Low EMI and noise

Mitigating EMI and noise in your switching regulator design may be a challenge, but we are here to help with loads of training material and innovative ICs.

Featured products


1.8-V to 6.5-VIN, high-efficiency 750-mA step-down converter with world's lowest quiescent current at 60-nA


4.5-V to 18-V input, 6-A synchronous step-down voltage regulator


4.5-V to 17-V input, 10-A synchronous SWIFT™ step-down converter


4.2-V to 60-V, 0.6-A ultra-small synchronous step-down converter

Featured DC/DC buck converter resources

Fully tested reference designs and test reports to help kick-start your design process.

Explore the wealth of training videos on various DC/DC buck converter topics.

Discover, design, and simulate with the world's most powerful online design environment.

Search for any suppliers' buck converters to find our similar devices.

See our E2E™ technical support forums for your source to fast, verified answers and design help from our experts.